Custom Elements: Complete HTMLConstructor Algorithm

third_party/WebKit/LayoutTests/custom-elements/spec/define-builtin-element.html

Index: third_party/WebKit/LayoutTests/custom-elements/spec/define-builtin-element.html
diff --git a/third_party/WebKit/LayoutTests/custom-elements/spec/define-builtin-element.html b/third_party/WebKit/LayoutTests/custom-elements/spec/define-builtin-element.html
index 3635a8bc1c31fa803b257d14903259a66fd3fdd6..02567ba6e050e62a585788e33721b34793729e45 100644
--- a/third_party/WebKit/LayoutTests/custom-elements/spec/define-builtin-element.html
+++ b/third_party/WebKit/LayoutTests/custom-elements/spec/define-builtin-element.html
@@ -24,7 +24,7 @@ test_with_window((w) => {
     }, `having valid custon element name element interface (${val}) ` +
        'for extends should throw a NotSupportedError')
   });
-}, 'Element interface for extends is not valid custom element name');
+}, 'Element interface for extends is not valid custom element name should throw error');
 
 test_with_window((w) => {
   class A extends w.HTMLButtonElement {}
@@ -43,12 +43,12 @@ test_with_window((w) => {
     }, `having element interface for extends (${val}) undefined in specs` +
        ' should throw a NotSupportedError');
   });
-}, 'Element interface for extends defined in specification');
+}, 'Element interface for extends not defined in specification should throw error');
 
 test_with_window((w) => {
-  class A extends w.HTMLButtonElement {}
-  w.customElements.define('defined-name', A, { extends: 'button' });
-  assert_equals(new A().localName, 'button',
+  class A extends w.HTMLDivElement {}
+  w.customElements.define('defined-name', A, { extends: 'div' });
+  assert_equals(new A().localName, 'div',
                 'localName should be element interface for extends');
   assert_not_equals(new A().localName, 'defined-name',
                     'localName should not be defined-name');